Scientific article

Can my child with IgE-mediated peanut allergy introduce foods labeled with "may contain traces"?

Published inPediatric Allergy and Immunology, vol. 31, no. 6, p. 601-607
Publication date2020

Peanut IgE-mediated food allergy is one of the most common food allergies in children with a prevalence that has increased in the past decades in Westernized countries. Peanut allergies can trigger severe reactions and usually persist over time. Peanut-allergic children and their families are often confronted to processed foods with precautionary allergen labeling (PAL) such as "may contain traces of peanuts," which are frequently used by the food industry. Patients are generally confused as to whether eating such foods entails a risk of allergic reaction, which can ultimately lead to dietary restrictions and decreased quality of life. Thus, guidance toward eviction of foods with PALs such as "may contain traces of peanuts" is a recurring problem that peanut-allergic patients address during pediatric allergy consultations with varying attitudes among allergists. Many studies have evaluated peanut contamination in foods with PALs, with generally less than 10% of foods containing detectable levels of peanuts, albeit heterogeneous amounts, with in rare occasions levels that could trigger allergic reactions in certain patients. The risk of reacting to foods with traces varies significantly with threshold, with patients with the lowest reaction thresholds at highest risk, and a dramatic reduction of risk as threshold increases. Thus, risk stratification based on individual reaction threshold may help stratify patients' risk of reacting to foods with PAL. In clinical practice, a single-dose 30 mg peanut protein oral food challenge may be an option to stratify peanut-allergic patients' risk when introducing foods with PAL, as illustrated by three clinical cases.

  • Food allergy
  • May contain traces
  • Minimal eliciting dose
  • Oral food challenge
  • Peanut allergy
  • Precautionary allergen labeling
  • Quality of life
  • Quantitative risk assessment
  • Single-dose oral food challenge
  • Threshold
Citation (ISO format)
GRAHAM, François, CAUBET, Jean-Christoph Roger J-P, EIGENMANN, Philippe. Can my child with IgE-mediated peanut allergy introduce foods labeled with ‘may contain traces’? In: Pediatric Allergy and Immunology, 2020, vol. 31, n° 6, p. 601–607. doi: 10.1111/pai.13244
Main files (1)
Article (Published version)
ISSN of the journal0905-6157

Technical informations

Creation08/18/2020 10:50:00 AM
First validation08/18/2020 10:50:00 AM
Update time03/15/2023 10:43:52 PM
Status update03/15/2023 10:43:52 PM
Last indexation05/05/2024 5:17:46 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack